We just found out about an event in Doubutsu no Mori e+ that may show up in ACWW. It's called Birthday Live!
On the Saturday before a player's birthday (the birthday told to animals in the village), when other players visit Totakeke, he will tell them about the upcoming birthday and ask them if they would like to leave a message for the birthday player.
When the player plays on his birthday, they will find Totakeke by the Train Station, no matter what time of day it is. He will play them a special birthday song, during which the birthday greetings, and the authors' names, will be displayed.
Here are some pictures: HERE
On the Saturday before a player's birthday (the birthday told to animals in the village), when other players visit Totakeke, he will tell them about the upcoming birthday and ask them if they would like to leave a message for the birthday player.
When the player plays on his birthday, they will find Totakeke by the Train Station, no matter what time of day it is. He will play them a special birthday song, during which the birthday greetings, and the authors' names, will be displayed.
Here are some pictures: HERE